Originally Posted by
fruitloop
Dual Duty was made for one reason, to save the manufacturer money. Short staple cotton pieces are cheap but very weak so it was wrapped in poly. It sews fine in many machines. But it is very overpriced for what it is.
I believe you have that backwards; it's cotton-covered polyester on the older spools and 37/63 cotton/poly on the "newer" (as in 20 yrs ago) spools. It doesn't say on the newer ones which is outside, but it does feel like it's the cotton.
charlotte